18841425 has 12 divisors (see below), whose sum is σ = 31151280. Its totient is φ = 10048720.

The previous prime is 18841411. The next prime is 18841451. The reversal of 18841425 is 52414881.

It is not a de Polignac number, because 18841425 - 2⁴ = 18841409 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 125535 + ... + 125684.

It is an arithmetic number, because the mean of its divisors is an integer number (2595940).

Almost surely, 2^18841425 is an apocalyptic number.

18841425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18841425 is a deficient number, since it is larger than the sum of its proper divisors (12309855).

18841425 is a wasteful number, since it uses less digits than its factorization.

18841425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251232 (or 251227 counting only the distinct ones).

The product of its digits is 10240, while the sum is 33.

The square root of 18841425 is about 4340.6710310734. The cubic root of 18841425 is about 266.0957359807.

The spelling of 18841425 in words is "eighteen million, eight hundred forty-one thousand, four hundred twenty-five".